to regulate them and they end up in our bodies. >> how a california law is contributing to the problem. >>> a 3,000-mile tribute to a life lost much too young. the message friends want people hear as they run coast to coast. ,, now, you're probably sittinn a pound of toxic chemicals.5 consumerwatch reporter julie watts explains one of those >>> if you are sitting on/couch you're probably sitting on a pound of toxic chemicals. cbs 5 consumerwatch reporter julie watts explains one of those chemicals was banned decades ago. >> so in the '70s, every child in america was wearing pajamas that were like 10% by weight chemical. >> reporter: after she discovered the common flame retardant with a carcinogen actually changed dna public outrage prompted 9 chemical industry to remove it from children's clothing. but the same chemical is in your couch. in order it comply with a 1970s california flammability regulation every couch sold in california contains chemical flame retardants but a joint study released out of uc- berkeley and duke found 94% of couches nationwide also contain the chemicals. >